Electric motor.



H. 0. OGLVE.

ELECTRIC MOTOR. APPLIOATION FILED FEB.20,

3 SHEETSSHEET 1.

Patented Mar. 25, 1913.

H. O. OGLB. ELECTRIC MOTOR. APPLICATION FILED FEB. 20, 1912.

aria-bum 6 o M w u M a Patented Mar. 25, 1913.

3 SHEETS SHEET 2.

flaricy CZ @950.

I qhfmeoom z H a w m T m 0 m E W w M m a H m a Z 3 Patented Mar. 25,1913.

UNITED STATES PATENT oEEioE.

HARLEY o. OGLE, or :oExrEE CITY, onro, ssrenon or ONE-HALF r0 LAWRENCESTEVENS, or MARIETTA, OHIO.

ELECTRIC MOTOR.

Specification of'L'etters Patent.

Patented Mar. 1913.

To all whom it may concern:

Be it known that I, HARLEY C. GGL a citizen of the United States ofAmerica, residing at Dexter City, in the county of Noble and State ofOhio, have invented new and useful Improvements in ElectrioMotors, ofwhich the following is a specification.

This invention relates to improvements in electric motors and hasparticular application to draft motors.

In carrying out'the present nvention, it is my purpose to provide anelectric motor of this type wherein the movement of the rotor may betimed and controlled so that the same may be operated at the desiredspeed in order to facilitate the operation of the motor in theutilization of the same for draft purposesysuch as hauling, hoisting andthe like.

Furthermore, I aim to provide a motor .ofthi's character wherein bymeans of a controller, the electric current may be commutat'ed anddirected through the armature or rotor to facilitate the rotation andregulate the speed of the same to various loads.

The'invent-ion also involves the provision of a controller whereby thedirection of rotation of the rotor may be reversed when such is desired,the controller being operable independently of the rotor but movabletherewith whereby the rotor may be revolved in the rotation of thecontroller and operated indirectly from the controller through themedium of an electric current.

With the above objects in view and others of a similar nature, theinvention consists in the construction, combination and arrangement'ofparts'hereinafter set forth in and falling within the scope of theappended claims.

In the accompanying drawings; Figure l is a side elevation of anelectric motor constructed in accordance with the present invention.Fig. 2 is an end elevation of the same. Fig. 3 is a section on the line8-3 of Fig. 1. Fig. 4 is a detail perspective view of the armature orrotor. Fig. 5 is a similar view of the controller, and Fig. 6 is adiagrammatic view of the circuit through the motor.

Similar reference characters designate like parts throughout the severalviews.

In'the accompanying drawings I have shown the invention applied to anelectric motor of the direct current type. Certain features of theinvention, however, are applicable to electric motors either of thedirect or the alternate current type and several other types of motorssuch as that class of motors known as induction, etc., and it will beunderstood that the invention is.

therefore not limited to the specific form of 1 o'tor as embodied in thedrawings, as l c ntemplate certain modifications ,and changes which maybe made in order to adapt the invention to the best advantage accordingto the circumstances and requirements in each particular case.

Referring to the accompanying drawings in detail, the motor in thepresent instance is mounted upon a base 1 provided with the uprightspaced parallel standards 2 between which latter is mounted the stator 3which is bolted or otherwise securely'fastened to the base 1. Thearmature or rotor is indicated at 4 and in this instance is journaled insuitable bearings 5 carried by the upper ends of the standards 2 atopposite sides of the stator.

The stator in the present embodiment of the invention embodies the fieldmagnets 6 terminating in oppositely disposed segmental pole pieces 7between which revolves the armature or rotor 4, the pole pieces of thefield magnets being energized from a core receiving its energizationfrom a wrapping or winding 8.

The armature, in the present showing, embodies a. shaft 9 journaled inthe bearings '5 and carrying the magnets 10 revoluble within the fieldand arranged in a plurality of rows about the armature shaft, themagnets of one row being staggered with respect to those of the adjacentrow, two of such rows being shown as an example and each comprising fourpoles or two magnets, the poles of each magnet being wound in relativelyopposite directions to present alternate north and south poles to thepole pieces of the field ma ets in order to facilitate the rotation othe armature as will be readily understood.

Fixed upon the armature shaft 10 at opposite sides of the armaturemagnet are sets of current conveying rings 11 insulated from one anotherand from the shaft 9.

Each set of the current conveying rings, in

the present instance, rings, incident to'the armature embodying but fourmagnets, one ring of each set heing'connected to the opposite terminalsof the winding of each magnet so that a circuit may be completedthrough' each magnet of the-armature in the movement of the controllerwhich will be hereinafter more fully described.

Suitably secured to the standards 2 at appropriate distances fromthecurrent conveying rings 11 are brackets 12 and fixed to eachbracketis a set of brushes 13, the number; of brushes in each setcorrespond ing to the number of rings in the respective set of thecurrent conveying rings carried by the armature shaft. These brushes 13are designed to bear upon the rings of their respective sets and areinsulated from one another and act to supply current to the windings ofthe armature magnets and take such current therefrom in order to make acircuit through the armature to facilitate the rotation thereof withinthe field. g

In order to supply the current to the rotor by way ,of one set ofbrushes 13 and take such current from the rotor, I have provided acontroller or commutator by means of which the current may be its flowthrough-the armature reversed in so that the armature may be rotated ineither a back- 'Ward or forward direction. This controller, in thepresent disclosure of the invention,

includes a contact holder 14 in the form of an annulus and secured inany suitable or desired manner to the outer surface of one of thestandards 2 and arranged concentrically about the shaft 9.

Loosely mounted upon the armature shaft 9 and secured thereto againstlongitudinal movement, is. a movable current controller 15, embodying inthe present instance a pair of diametrically disposed segments 16 and 17insulated from each other and from the sleeve 18 of the currentcontroller, which sleeve encircles the armature shaft. Fixed upon thesleeve and insulated therefrom and from each other are'current carryingrings 19 and 20 connected tothe segments 16 and 17 respectively throughthe medium of conductors 21 and 22, the rings 19 and 20 serving toconvey the current to and from the motor armature. The insulatedsegments 16 and 17 of the current controller are arranged intermediatethe armature shaft 9 and the annular contact holder l t and areconcentric with respect to such shaft.

Fixed within the contact holder 14 at a propriate intervals andextending within the same are a plurality of contacts 23, eight beingshown in this instance and these contacts are connected to the brushes13 by way of conductors 24, the connections being such as to facilitatethe feeding of the current to the proper pole pieces of the arma- 'iscomposed of four of thepair 27 being ture magnets so that the same maybe re versed field magnets to impart the proper movement to the armatureas is understood. The contacts 23 as illustrated are arrangedcircumferentially of rent controller and are disposed at a tangentthereto and each has its engagin ter minal upturned 'as at 25 to provide3%)881" ing surface to receive one or the otherof the segments of thecurrent controller in the movement of the Fast upon the contact holder14 is a bracket 26 and to this bracket is fastened a pair of brushes 27having rubbing engagewith respect to the pole pieces of the latter ineitherjdirection,

the segments of the cur- .ment with the rings 19 and 20 in order toconvey current to the cur-tent controller and take such currenttherefrom.- One of these brushes 27 as illustrated is connected by meansof a conductor 28 to one terminal of the field winding 8, theopposite'terminal of' which latter is connectedto a bindin post 29 byway of a conductor 30, the other rush 31 having its free terminalconnected to a binding post 32,'the binding posts 29 and 32 beingdesigned to receive an electric current from the mains (not shown).

The field winding, as shown is connected in series With the controllerand the armatu re windings are also connected in series with thecontroller. By virtue of these connections it will beseen that when thecontroller 'is rotated in one direction, the segments 16 and 17 willengage with alternate pairs of contacts 23 to supply current to thearmature magnets within the maximum magnetic force of the field, thecontinuous rotation of the controller making the current through themagnets within such force of the'field thereby producing a continuousmovement of the armature Within the field and subjecting the same toregulation and timing whereby the motonmay be adapted to hauling orutilized for other draft purposes, it of course being understood thatthe speed of the armature is proportional to the speed of rotation ofthe controller.

A crank 33 is connected to the sleeve 18 of the current controller inany suitable manner and is designed for manual operation wherebymovement may be imparted to the controller, it of course beingunderstood that the crank 33 may be connected toany suitable mechanismat'a point remote from the motor to facilitate the operation of thelatter from a distant point. Upon the direction of the controller beingreversed it will be seen that the flow of current through the" armatureis reversed thereby permitting a reverse movement of the armature inaccordance with the movement of the controller.

While I' have shown and described one embodiment of the invention, byway of illustration, I desire to have connected to a conductor itunderstood be made within the scope of the claims without departing fromthe spirit or sacrificing any advantages of the invention.

.1 claim:

'1. An electric motor comprising a stator, a rotor having windings, aplurality of current conveying rings associated with the rotor andconnected to the windings thereof a plurality of brushes contacting withsai rings and adapted to supply current to the rotor and take suchcurrent therefrom, and a controller operable tocontrol the flow ofcurrent to the windings of the rotor and time the rotation thereof, saidcontroller comprising a sleeve loosely surrounding the armature shaft,segments carried by said sleeve at diametrically opposite points,currentl carrying rings upon said sleeve and in electrical communicationWithsaid segments, an annular contact holder surrounding said sleeve andspaced apart therefrom, and a plurality of contacts fixed to said holderand extending inwardly thereof and bearing upon said segments.

2. The combination with an electric motor including a stator and arotor, of a controller for the motor operable to permit the passing of acurrent through the rotor in reverse directions and to vary the speed ofsaid rotor, said controller comprising asleeve surrounding the armatureshaft, segments carried by said sleeve at diametrically opposite points,current carrying rings carried by the sleeve and each in electricalcommunication with one of said segments, an annular contact holdersurrounding said sleeve and spaced apart therefrom, a plurality of contacts carried by said holder and extending inwardly thereof and bearingsupon said segments, and means for rotating said sleeve.

In testimony WhereofI afiix my signature in presence of two witnesses.

HARLEY C. OGLE.

Witnesses:

H. E.- Karen, J. D. Ponmo.

